Endoscopic instrument



(No Model.)

T.S.PITT. ENDOSGOPIG INSTRUMENT.

No. 605,652. Patented June 14,1898.

. I 5 \MTN E 555.5:

A lnents, of which the candescent has been dueto the fact that theUNITED STATES PATENT OFFICE.

THOMAS s. PIT -or BOSTON, MASSACHUSETTS.

EN DOSCOPIC lNS TRUlVlENT.

SPECIFICATION forming part of Letters Patent No. 605,652, dated June 14,1898. d

' Application filed June 1, 1897- Serial No. 638,891. (No model.)

To all whom) it may concern:

Be it known that I, THOMAS S. PITT, of Boston, in the county of Suffolkand State of Massachusetts, have invented certain new and usefulImprovements in Endoscopic Instrufollowing is a specification.

This inventionhas relation to endoscopic instruments, and has for itsobject to provide a speculum or instrument of a similar nature with anincandescent or other illuminating means which will be so located as tohave its rays reflect only upon the portion of thebody which it may bedesired to examineor treat.

One of the Serious objections to equipping an instrument with anelectric or other inlatter has been in danger of breakage and that thelight emitted therefrom was reflected into the eyes of the operator.

I My invention consists of an instrument equipped with anincandescent-holder so ar ranged as to receive an incandescent andreflect its light upon the part-ofthe body upon which it is desired tooperate and so constructed as to effectually protect the bulb of theincandescent from being fractured or broken.

Theinvention further consists in various other features of improvement,all as illustrated upon the drawings and now to be described in'detail,and pointed outin the claims hereto appended.

Of the drawings, Figure 1 represents a perspective View of my improvedendoscope. Fig. 2 is a similar view, but showing the jaws thereofpartially open, so as to allow the light A from the incandescent to bereflected upon the portion of the walls of the cavity into which theinstrument is inserted. Fig. 3 represents a longitudinal section throughthe instrument. Fig. 4 represents a cross-section on the line 4 4 ofFig. 3. Fig. 5 represents the two halves of the instrument asbeingdisjointed and also showing the pivotal connection between the saidparts. Fig. 6 is a de tail view of the latch for engaging the stopbarwhich holds the jaws in any desired po-' sition. Fig. 7 represents aperspective view of the incandescent or light holder. Fig. 8

represents theperspective view of the shield or cover which forms a partof theholder.

Referring to the drawings, I have illustrated an. instrument which -isespecially adapted for certain cavities in the human body, but it willbe understood that-I do not propose to limit myself to that particularform of the instrument, as the jaws thereof may be shaped and formed forany other use,as may be desired. As illustrated, the two complementaljaws a b, when placed side by side, form a cone with a rounded apex.Extending rearward from each jaw are handles a b, which are bent at anangle to the jaws at 2 and which diverge, as clearly shown in Figs. 1and 2. The two handles are provided with overlapping ears or lugs a 19the former having b in the lug or car 19 The pintle or pivot a 'issubstantially parallel to the axis-line of the cone formed by the jaws,so that when the handles are drawn together the jaws are separated inparallel lines, as shown in Fig. 2.

The jaw b is provided with a curved plate 0, which projects across theedges 3 of the jaws into the recess in the jaw a, as shown in Fig.4, sothat when the jaws are separated the surrounding walls of the cavity inthe body are prevented from projecting between the said edges3 3. Thesaid plate extends practically, he entire length of the jaws, as shownin Fig. 3.

' The jaws are held normally closed by a flat spring (1, having one endsecured to the handle a' and its other end pressing against the inneredge of the handle I), but they may be held apart by a rod or rack-bar6, having one end pivoted to the handle a and the other end projectingthrough an aperture b in the handle I). The thumb-lever o is pivoted tothe handle I) and is connected at its front end with a latch eflwhi'chis thrust into engagement with the teeth on, the bar e by a spring 6bearing against the under side of the other end of the thumb-levere. Thepivots e e ,which connect the thumb-lever with the handle and with thelatch, may be withdrawn,

so as toremove the parts jfOrthe purpose of ceptaele having aconcavo-convex body portion f and the oppositely-curved guard or coverf, the edges f of which are bent inwardly to take over the edges of thebody portion f. Into the cavity in the light-receptacle may be placed anincandescent-light bulb of any charactersuch as conventionallyillustrated at ,1 in Figs. 3 and 4, the wires which are connected to thefilament beingindicated by g. The front end of the shield is curvedupwardly, as at f to act as a reflector to rellect the rays of lightfrom the incandescent upward and forward against the edges & l of thejaws. The shield is also provided with apertures f and with reflectorsf, which reflect the light emitted through said apertures. Thereceptacle is held in place upon the plate 0, which protects it by ascrew f threaded into the handle near the base of one of the jaws andpassing through a bayonet-slot f in the extended end of the lowerportion of the receptacle. The said end is likewise provided withanother bayonetslot f, so that the receptacle may be adjusted inposition. 1

From the foregoing it will be seen that I have provided a very simpleinstrument for endoscopic purposes.

The incandescent receptacle is adjustable and is constructed so as toreflect the light against the walls of the cavity which are exposed toview between the edges 4 4c of the jaws when the jaws are open orseparated, and the upwardly-projecting portions f not only act asreflectors in throwing the light upward, but also prevent the rays oflight from being reflected into the eyes of the surgeon or operator.

\Vhen an instrument is introduced into the cavity between the jaws,thereis no danger of its breaking or destroying the glass bulb of theincandescent-lamp bulb, as the reflectors form a safeguard for it, and,moreover, the plate 0 prevents any portion of the body from coming intocontact with the holder.

I claim 1. A light holder or receptacle for use on an endoscopicinstrument, having a curved body portion to receive an incandescent, anda freely removable concavo convex guard having imvardly-turned edgesfitting on said body portion and having one or more upwardly-turned lugswhich operate as reflectors to throw the light upward and forward.

2. A light holder or receptacle for use on an endoscopic instrument,having a curved body portion to receive an incandescent, and aconcavo-convex guard fitting on said body portion and having a series oflight-emitting apertures and a reflector in the rear of each aperture tothrow the light upward and forward.

3. A light holder or receptacle for use on an G11(lOSCOl )lC instrument,having a curved body portion to receive an incandescent, and aconcavo-convex guard fitting on said body portion and having one or morereflectors bent up therefrom, and having one or more light-emittingapertures.

4:. A detachable light holder or receptacle for use on an endoscopicinstrument comprising a concavo-convex body portion for receiving theincandescent, and having an extended shank with bayonet-slots forattaching it in place, and a removable sliding cover formed withupwardly-turned reflectors.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this lflth day of March, A. D.1897.

THOMAS S. llTT.

\Vitn esses:

EDw. L. II. DRAKE, JAY .llILDnn'ru.

